| Conference | Deadline | Date | Country |
| 1.2026 Spring International Conference on Material Sciences and Technology (MST-S)( EI Compendex) | 2026-04-02 | 2026-04-17 | China |
| 2.[ScopusCNKI]2026 2nd International Conference on Eco-environmental Protection, Environmental Monitoring and Remediation(EPEMR 2026) | 2026-04-02 | 2026-04-24 | China |
| 3.49th HELSINKI International Conference on “Chemical, Biological & Environmental Engineering” (HCBEE-26) scheduled on April 27-29, 2026 Helsinki (Finland) | 2026-04-01 | 2026-04-27 | Finland |
| 4.53rd HELSINKI International Conference on “Marketing, Education, Social Sciences & Humanities” (HMESH-26) scheduled on April 27-29, 2026 Helsinki (Finland) | 2026-04-01 | 2026-04-27 | Finland |
| 5.51st ISTANBUL International Conference on Chemical, Biological & Environmental Sciences (I2C2BES-26) scheduled on April 29-May 1, 2026 Istanbul (Türkiye) | 2026-04-01 | 2026-04-29 | Turkey |
| 6.36th ISTANBUL International Congress on Animal, Fisheries & Veterinary Sciences (IAFVS-26) scheduled on April 29-May 1, 2026 Istanbul (Türkiye) | 2026-04-01 | 2026-04-29 | Turkey |
| 7.65th ISTANBUL International Conference on Research in Humanities, Social Sciences & Education (RHSSE-26) April 29-May 1, 2026 Istanbul (Türkiye) | 2026-04-01 | 2026-04-29 | Turkey |
| 8.68th BARCELONA World Congress on Green Chemical Engineering, Energy & Environmental Sustainability (GCE2S-26) | 2026-04-01 | 2026-04-20 | Spain |
| 9.61st BARCELONA Global Congress on “Chemical, Biological, Environmental & Medical Sciences” (BCBEM-26) scheduled on April 20-22, 2026 Barcelona (Spain) | 2026-04-01 | 2026-04-20 | Spain |
| 10.59th BARCELONA World Congress on Humanities & Social Sciences (WCHSS-26) | 2026-04-01 | 2026-04-20 | Spain |
| 11.5th MANILA International Conference on Chemical, Biological & Environmental Engineering (MCBEE-26) scheduled on March 30-April 1, 2026 Manila (Philippines) | 2026-03-30 | 2026-03-30 | Philippines |
| 12.2026 2nd International Conference on Environmental Monitoring and Ecological Restoration (EMER 2026) | 2026-03-27 | 2026-03-29 | China |
| 13.6th CEBU International Congress on Green Chemical Engineering, Energy & Environmental Sustainability (GCE3S-26) scheduled on March 26-28, 2026 Cebu (Philippines) | 2026-03-26 | 2026-03-30 | Philippines |
| 14.5th MANILA International Conference on Marketing, Education, Humanities & Social Sciences (MEHSS-26) March 30-April 1, 2026 Manila (Philippines) | 2026-03-26 | 2026-03-30 | Philippines |
| 15.52nd PARIS International Congress on “Science, Social Sciences, Humanities & Education” (S3HE-26) scheduled on April 15-17, 2026 Paris (France) | 2026-03-20 | 2026-04-15 | France |
| 16.48th PARIS World Congress on “Green Chemical Engineering, Energy & Environmental Sustainability" (GCEEES-26) scheduled on April 15-17, 2026 Paris (France) | 2026-03-20 | 2026-04-15 | France |
| 17.50th PARIS International Conference on “Literature, Languages, Social Sciences & Humanities” (LLSSH-26) April 15-17, 2026 Paris (France) | 2026-03-20 | 2026-04-15 | France |
| 18.43rd PARIS International Conference on Research in Chemical, Biological & Environmental Sciences: ACBES-26 | 2026-03-20 | 2026-04-15 | France |
| 19.International Conference on Emerging Technologies in Engineering, IT, and Applied Sciences | 2026-03-18 | 2026-03-28 | Japan |
| 20.10th International Conference on Applied Mathematics and Sciences (AMA 2026) | 2026-03-14 | 2026-05-30 | Australia |
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